Comparison of the quality of B-scan ultrasound in modern high-end devices.

Purpose:  The quality of an ultrasound device's B-scan mode is decisive in obtaining clear and informative images. High demands are placed upon ultrasound devices, particularly in cases where evidence of small lesions of parenchymal organs is being gathered.

Methods:  We tested the quality of the B-scan mode in ultrasound devices of 7 different manufacturers.

[The effect of natural and synthetic secretin on insulin secretion (author's transl)].

The effect of natural secretin (G.I.H.

[Pancreatic secretion of patients with chronic renal insufficiency (author's transl)].

Pancreatic function tests were performed in 15 patients with advanced renal insufficiency. Pancreatic secretion was stimulated with CCK/PZ and secretin and 60 minutes later with bile given intraduodenally and CCK/PZ and secretin intravenously. The Wilcoxon-test showed that there were significantly higher lipase levels in serum and lower amylase amounts in duodenal juice compared to normal volunteers.